fix: local setup issues

[rolznz]

I had some issues getting started:

• I couldn't run the docker solution because it doesn't support amd64.
• I tried to clone and run it locally but the process immediately exits without proper instructions on what to do because it expects a command but doesn't tell you.
• There is a crypto-js dependency issue that makes it crash as soon as you start.

This PR attempts to fix those issues.

[nourspace]

Could you check the latest docker setup instructions? Also, you need to use node +20, which isn't mentioned outside docker 😅
The proposed changes in this case would be unnecessary.